Using your K&N universal air filter is easy. Just attach it to your equipment's air intake. Make sure the rubber flange fits snugly. If it's a bit tight, you can gently stretch the flange up to 1/16 of an inch (1.5mm) to get the right fit. When it comes to maintenance, regularly check the filter for dirt and debris. When it gets dirty, wash it with a mild cleaner and let it dry completely. Then it's ready to be reused. Avoid using harsh chemicals as they might damage the filter. And always make sure the filter is completely dry before reinstalling it to prevent any issues with your equipment.